I found a literature, which published by Ajinomoto in 1990, but I think that literature is too old for nowadays broiler genetics. My company produce two type of Broilers. Regular one is Ross 308 and the premium one is Hubbard JA 57. I need Lys : AME ratios for both of.
In the past these companies always provided technical bulletins with nutrient requirements for the different breeds.
I would be surprised if they had stopped doing that. So ask your suppliers for this information.
Just like C.A. (Kees) Kan mentioned, I think you can find these information on the technical bulletin of the companies. That may be your most reliable source for this information.
Unless you determine the probably limiting nutrients in all feedstuffs all the time, you need to have safety margins to prevent unwanted performance depressions.
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